Our SaaS development agency designs and builds custom software for startups and SMEs, from scoping and user journeys to architecture, subscriptions, security, production launch and handover.
User journeys, roles, integrations, exclusions and acceptance conditions are tied to verifiable deliverables before development begins.
The estimate separates scoping, development, third-party services, operations and approval dependencies; it does not force every SaaS project into the same timeline.
The proposal states which code, environments, credentials and documentation will be handed over, and which components remain external services.
Monitoring, backups, maintenance, any on-call coverage, reversibility and post-launch responsibilities are clarified before production.
Custom SaaS development is relevant when the same product must serve several organizations or user groups through coherent permissions, data, monitoring and service rules. The decision is not just a feature checklist: it creates lasting responsibilities for support, hosting, updates, security and product evolution.
Not every digital need calls for a new SaaS product. Existing software, automation, an internal business application or a focused MVP may be a better fit. The first deliverable is therefore a scope decision, not an architecture selected by habit.
The France Num 2025 Barometer, based on 11,021 businesses and updated on April 7, 2026, reports that 78% of respondents see a real benefit from digital technology, while 37% struggle to find the right provider. These are self-reported responses: they primarily support a transparent discussion of deliverables, limitations and responsibilities.
“Because SaaS creates lasting product, support and operational obligations. If existing software, automation, an internal application or a test without custom development solves the problem more effectively, we say so before the budget is committed.”
Product, technical and operational choices are documented around your model, users and risks. Not every project needs every building block.
We clarify the problem, segments, people who use, administer and buy the service, and the assumptions that still need evidence. With our Product Management agency, we turn them into prioritized journeys, exclusions, acceptance criteria, risks and a decision log. The sponsor retains ownership of market, pricing, budget and launch decisions.
We design sign-up, invitations, activation, account management, support and the necessary administration screens. Prototypes and tests prepared with our Product Design agency help us observe whether users understand the journeys before interfaces are locked down. We do not call onboarding effective without evidence from the intended users.
We choose the degree of customer isolation, permission model, data model, APIs and integrations from known usage, volumes and constraints. Multi-tenancy is only one option: some contexts require stronger separation. Architecture decisions, migrations, dependencies and known capacity limits are recorded so they can be reassessed with actual usage data.
We translate plans, trials, plan changes, associated permissions, invoices and payment events into testable rules. The proposal identifies external providers, their costs, the data exchanged and failure scenarios to handle. PeakLab implements the selected model; your company remains responsible for pricing, commercial terms and their approval.
Access controls, secret management, updates, tested backups, logs, alerts and incident procedures are proportionate to the risk. In the 2025 Cybermalveillance.gouv.fr survey, 16% of the 588 small and medium-sized businesses surveyed said they had experienced an incident in the previous twelve months. The CNIL's essential security rules, published on June 19, 2026, cover measures including multifactor authentication for sensitive accounts, updates and restoration testing.
We prepare acceptance, migration, deployment, monitoring, documentation and handover for the agreed scope. Since September 12, 2025, the Data Act has governed provider switching for relevant data-processing services, among other matters; its exact application must be assessed for each offer. We document the agreed export formats, access and dependencies, then hand over the items listed in the proposal. Gather your context with our requirements generator or review our product and technology expertise.
We went from 1 hour per file to 15 minutes. The tool allowed us to multiply our processing capacity by 10 while improving the quality of our analyses. ROI was achieved in 3 months.
Modern and proven stack for high-performance apps
Usage, segments, stakeholders, assumptions, constraints, risks and decision criteria
Prototypes, roles, data, integrations, third-party services, exclusions and acceptance criteria
Development, reviews, critical-journey tests, a staging environment and known debt
Migration, deployment, monitoring, backups, procedures and support responsibilities
Repository, access, documentation, handover, usage evidence and maintenance or internalization options
Usage, segments, stakeholders, assumptions, constraints, risks and decision criteria
Prototypes, roles, data, integrations, third-party services, exclusions and acceptance criteria
Development, reviews, critical-journey tests, a staging environment and known debt
Migration, deployment, monitoring, backups, procedures and support responsibilities
Repository, access, documentation, handover, usage evidence and maintenance or internalization options
For ODD Pharma, a small business supported by PeakLab, we designed a white-label platform that collects data, presents it through a dashboard and generates tailored reports for its customers. The case study documents the requirements, the solution and a testimonial attributed to Victor Ottavi.
This evidence shows our ability to turn an operational process into a product that can be distributed and administered. It does not guarantee adoption, revenue, user volume or delivery time for another SaaS product. Scope and criteria are defined again for every company.
If the need or feasibility is still uncertain, start by comparing an MVP and a POC. If the project is ready to describe, our requirements generator helps collect journeys, data, integrations and constraints before the first conversation.
A first conversation to clarify users, constraints, risks and the next useful decision. No commitment.
Budget, timing, architecture, security, accessibility, ownership and handover: decisions to clarify before development.
In one call, we tell you what's feasible, at what price, and in what timeframe. With full transparency.
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